{%- assign buildAt = site.time | date: "%Y%m%d%H%M%S" -%}
<head>
  <title>{{ page.title }}-{{ site.title }}</title>
  <meta charset="utf-8" />
  <meta http-equiv="content-language" content="zh-CN" />
  <meta name="theme-color" content="#ffffff" />
  <meta name="viewport" content="width=device-width,initial-scale=1" />
  <meta name="applicable-device" content="pc,mobile">
  <meta name="google-site-verification" content="ckhUaoa05QCmWoE1FafzTBcqYI4yBOy-UJKopXDS18M" />
  <meta name="author" content="{{ site.author }}" />
  {%- if page.categories %}
  <meta name="description" content="{{ page.title }}"/>
  <meta name="keywords" content="{{ site.author }}{% for category in page.categories %},{{ category }}{% endfor %}"/>
  {% else %}
  <meta name="description" content="{{ site.description }}"/>
  <meta name="keywords" content="{{ site.keywords }}"/>
  {% endif -%}
  <link rel="icon" href="{{site.baseurl}}/static/img/favicon.ico" />
  <link rel="apple-touch-icon" href="{{site.baseurl}}/static/img/logo.png" />
  {%- if page.layout == "mypost" %}
  <link rel="stylesheet" href="{{site.baseurl}}/static/css/common.css?t={{buildAt}}">
  <link rel="stylesheet" href="{{site.baseurl}}/static/css/post.css?t={{buildAt}}">
  <link rel="stylesheet" href="{{site.baseurl}}/static/css/highlight.css?t={{buildAt}}">
  {%- endif %}
  {%- if page.layout == "page" %}
  <link rel="stylesheet" href="{{site.baseurl}}/static/css/common.css?t={{buildAt}}">
  <link rel="stylesheet" href="{{site.baseurl}}/static/css/page.css?t={{buildAt}}">
  {%- endif %}
</head>
